Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.
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2 Corinthians 9:5-9
Tyndale Open Study Notes (CC BY-SA 4.0).
9:7 It is the spirit of giving that counts, “For God loves a person who gives cheerfully.” Cheerfulness in giving is contrasted with giving reluctantly (literally out of sorrow) or in response to pressure.
Other Bible passages linked to this one, most cited first.
For if there be first a willing mind, it is accepted according to that a man hath, and not according to that he hath not.
I have shewed you all things, how that so labouring ye ought to support the weak, and to remember the words of the Lord Jesus, how he said, It is more blessed to give than to receive.
I know also, my God, that thou triest the heart, and hast pleasure in uprightness. As for me, in the uprightness of mine heart I have willingly offered all these things: and now have I seen with joy thy people, which are present here, to offer willingly unto thee.
Speak unto the children of Israel, that they bring me an offering: of every man that giveth it willingly with his heart ye shall take my offering.
The liberal soul shall be made fat: and he that watereth shall be watered also himself.
If there be among you a poor man of one of thy brethren within any of thy gates in thy land which the LORD thy God giveth thee, thou shalt not harden thine heart, nor shut thine hand from thy poor brother: But thou shalt open thine hand wide unto him, and shalt surely lend him sufficient for his need, in that which he wanteth. Beware that there be not a thought in thy wicked heart, saying, The seventh year, the year of release, is at hand; and thine eye be evil against thy poor brother, and thou givest him nought; and he cry unto the LORD against thee, and it be sin unto thee.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.